Results 101 to 110 of about 5,247 (233)
A new low-cost, compact, auto-phoropter for refractive assessment in developing countries
Scientific Reports, 2017 Using a phoropter to measure the refractive error is one of the most commonly used methods by ophthalmologists and optometrists. Here, we demonstrate design and fabrication of a portable automatic phoropter with no need for patient’s feedback. The system
Babak Amirsolaimani +4 more
doaj +1 more source
The Painterly Materiality of Clouds in Antony and Cleopatra and Hamlet
Renaissance Studies, EarlyView.Abstract This article examines the cloud‐gazing scenes in Antony and Cleopatra and Hamlet through the lens of early modern artistic theory and material practices, particularly the art of limning. Building upon existing philosophical and poetic interpretations of Shakespearean clouds as metaphors for ephemerality and memory, the essay argues that the ...
Anne‐Valérie Dulac
wiley +1 more source
Thermal lens effect and fluorescence of motor oil investigated by holographic method
, 2017 This paper presents studies of the thermal lens effect in the volume of motor oil by holographic methods using excitation of 447[Formula: see text]nm laser wavelength.
Nickolai Kukhtarev +2 more
core +1 more source
School Science and Mathematics, EarlyView.ABSTRACT An essential aspect of mathematics teacher education is the development of professional noticing. A 360 video is a new technology that can aid in developing mathematical teacher noticing. This study examines the relationship between preservice teachers' noticing of mathematical student thinking and the variation in their physical focusing ...
Christine K. Austin +2 more
wiley +1 more source
Noise gratings in thick-phase holographic lenses
, 1993 An experimental analysis of noise gratings in holographic lenses is presented. Lenses are recorded as thick-phase holograms in bleached silver halide emulsion.
Beléndez, Augusto +2 more
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Enantioselective Separation and Negative Transport of Chiral Particles via Optical Needle Fields
Nanophotonics, Volume 15, Issue 13, 13 July 2026.This work proposes an all‐optical strategy that leverages a tailored optical needle field for the enantioselective separation and 3D manipulation of chiral particles. By introducing phase modulation, we engineer a dual‐needle configuration capable of spatially separating and negatively transporting both enantiomers within a single system, offering a ...
Manman Li +7 more
wiley +1 more source
Real-time holographic camera for obtaining real 3D scene hologram
Light: Science & ApplicationsAs a frontier technology, holography has important research values in fields such as bio-micrographic imaging, light field modulation and data storage.
Zhao-Song Li +11 more
doaj +1 more source
IEEE Photonics JournalLensless holographic projection technology allows for removing of the projection lens and simplifies the optical projection system. It has great potential to be applied in the fields of three-dimensional printing, integrated circuit fabrication, and ...
Xingjian Li +3 more
doaj +1 more source
Advanced Optical Materials, Volume 14, Issue 25, 3 July 2026.A theoretical model is developed to visualize three‐dimensional refractive index profiles in transmission holographic gratings. In this work, it is applied to photopolymerizable hydrogels, enabling detailed analysis of the internal structure of recorded holograms and their evolution under different degradation conditions.
Belén Nieto‐Rodríguez +4 more
wiley +1 more source
, 2021 We present a method to calibrate and correct lens aberrations in dark-field Digital Holographic Microscope (df-DHM). In this method a gold nanoparticle is used to measure the point-spread function (PSF) of the df-DHM.
de Boer, J. F.; id_orcid +8 more
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